A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6150-01-630-5113
NSN 6320-01-029-4220
NSN 4140-00-106-0117
NSN 2925-00-899-4261
NSN 6240-00-929-0585
NSN 5975-01-411-2626
NSN 6110-00-533-8623
NSN 5895-00-200-2329
NSN 6320-01-176-8367
NSN 6685-01-468-5787
NSN 5910-01-303-7422
NSN 5920-01-416-2133